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While skateboarding at 19 km/h, Alana throws a tennis ball at 11 km/h to her friend Oliver. If Alana is the reference frame, the speed of the tennis ball is km/h.
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Mar 19, 2018
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While skateboarding at 19 km/h, Alana throws a tennis ball at 11 km/h to her friend Oliver. If Alana is the reference frame, the speed of the tennis ball is km/h.
Physics
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Coblr
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8 km/h I think good luck if it's wrong
Antonietta
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Mar 20, 2018
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the answer is 11 km/h ... i just took the test
FerDensetsu
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Mar 25, 2018
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